NBC 2009August2

More electrostim excitement ensued. Once again, driving signal generator output backwards through a transformer extracted from a wall-wart into 3M red dots on our valiant experimenters.

Skin resistance. We tested this after the other tests, and found that the resistance started low and climbed. These numbers are about when we got sick of waiting for it to stabilize. Mikolaj: 55 kOhms, Orion: 50 kOhms, Mike: 116 kOhms, Rachel: 300 kOhms

Results were recorded chronologically. MikeW and Mikolaj observed notable sweating on hands, Orion and Rachel not at all. Also belatedly noticed that symmetry was way skewed to one side until MikeW's second test of second round.

General conclusions: 1mA seems to be a sensible upper bound for current. Next step is to build an inductor-based current source based on standard dc-dc boost topology.